PACSystems™ RX3i and RSTi-EP CPU Reference Manual Section 5
GFK-2222AK October 2019
Communications 121
5.1.1.1.2 Problem example #2:
A user wishes to communicate through a routed network to an RX3i CPU with multiple
network interfaces (CPE330, in this example). This remote IP device is configured with the
following IP parameters:
The user intends to communicate between the remote device and CPE330 LAN1 ().
IP Address routing allows the CPE330 to receive the remote IP requests through the
respective gateways (192.168.0.250 for the remote node and 10.10.0.249 for CPE330
LAN1). However, since CPE330 LAN2 shares the same IP subnet as the remote network
(192.168.0.x), responses may be routed to the local 192.168.0.x network rather than to
the remote network ().
The duplicate IP subnet in the example must be eliminated. One way to do this is simply
change the IP Address assigned to CPE330 LAN2 from 192.168.0.1 to 192.168.1.1
thereby creating a non-overlapping 192.168.1.x network. In short, consider the totality of
the network when assigning IP subnets and IP Addresses.
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